#define quickread
#ifdef quickread
#include <cstdio> 
template <typename T>
inline void read(T& x)
{
    int c=getchar(), f=1; x=0;
    while(c<'0'||'9'<c) {if(c=='-') f=-1; c=getchar();}
    while('0'<=c&&c<='9') 
        x=(x<<3)+(x<<1)+c-'0', c=getchar();
    x*=f;
}
template <typename T>
inline void quickwrite(T x)
{
    if(x<0) putchar('-'), x*=-1;
    if(x>=10) quickwrite(x/10);
    putchar(x%10+'0');
}
#else 
#include <iostream>
#endif
using namespace std;
#define DEBUG
const int N=40;
int x, y, k, bitcnt, ans;
int a[N];

void init()
{
    read(x), read(y), read(k);
    for(int i=0; i<=k; i++) 
    {
        read(a[i]);
        if(i&&a[i-1]<<1<a[i]) a[i]=a[i-1]<<1;
    }
    bitcnt=0; ans=0;
}

void solve()
{
    init();
    for(; bitcnt<=k; bitcnt++)
    {
        if((1<<bitcnt&x)^(1<<bitcnt&y)) 
        {
            ans+=a[bitcnt];
            printf("bit:%d ans:%d\n", bitcnt, ans);
        }
    }
    quickwrite(ans); puts("");
}

// #undef DEBUG
signed main()
{
    #ifdef DEBUG
        freopen("../in.txt", "r", stdin);
        freopen("../out.txt", "w", stdout);
    #endif
    #ifndef quickread
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    #endif

    int T=1; scanf("%d", &T);
    while(T--) 
    {
        solve();
    }
    return 0;
}
